Teat membrane and tumor remover



ammi* Dec. 22, 1931. o. THosTl-:NSON

TEAT MEMBRANE AND TUMOR REMOVER Filed March 29, 1930 Patented Dec. 22, 19314 OLE Tfios'rnnson, or RENVILLE, yM'miNnsorli TEAT MEMBRANE Aun TUMOR nniviovnn Y l Application inea March e9, 1930.- seriai 110.440,139.

rlhis .invention appertains to` veterinary surgical instruments and hasl for one of its primaryobjects to provide a device for operating on the teats of cows for removing or cutting tumor ormem'brane formations there-- in whichhinderor stop the iiow, of milk therethrough. p fl .1

Another important object of my invention isV the provision'of a veterinary. instrument for removing membrane from the teats of cows embodying a hollowfV sleeve .having a penetrating point for insertion in the teat and for .puncturing the membrane, the hollow sleeve Vhaving' adjacent to the penetrating point thereof a cutout slot provided with a cutting edge, with a slide rod mounted in the sleeve for forcing the edge of the punctured membrane against the cuttingedge ofthe slot, thereby permitting the cutting of the membrane as the sleeve is turned within the teat. Y A further object of my invention is the provision of novel means for associating the penetrating point with the hollow sleeve whereby different types of points can be used for dierent purposes and whereby the sleeve and point can be readily cleaned and kept in a sanitary condition after an operation.l

A still further object of my invention is to provide an improvedveterinary surgical instrument of the above character, which will be durable and eiiicient in use, one that will be simple and easy to manufacture, and one which can be placed upon the market at a reasonable cost.

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts, as will be hereinafter more specifically described, claimed, and illustrated in the accompanying drawings in which drawings:

Figure 1 is a side elevation of my improved surgical instrument showing the same in use, the teat of the cow and the obstructing membrane being shown in dotted lines.

Figure 2 is an enlarged fragmentary sidel elevation of the instrument illustrating the cut out notch or slot in the side wall of the sleeve for cutting ythe punctured edge of the membrane.

needleorsleeve flush with the "Figure 3 is a similar view taken at "right angles to Figure with the vsleeve in sections and. showing the punctured membrane inpdotted'lines.. .i Figure fl is a transverse section taken on the line ls-4 of Figure 8, and

point.

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout the several views, the letter A generally indicates my improved 'NTQFFICE; i

1 Figure 5 is a detail fragmentary sectional i viewshowin'ga diferenttype of vpenetrating veterinary surgical instrument which comprises an elongated hollow tubular sleeve or` needle 10 preferably formedv of steel suitably treated to prevent the corrosion thereof. The cuter or forward end of the sleeve or hollow needle is internally threaded as at 1 1for the reception of the threaded shank 12 of a penetrating point 13, see Figure 3 of the drawings. The penetrating point13 is of an elongated 'character and is preferably used for initially punctu'ring the membrane or tumor and after ltheyniembrane has been' punctured the. sleeve can be removed, if so desired, and the relatively blunt penetrating point 14 useduin'li'eu thereof, this point likewise'having a threaded shank 15 for engaging in the threaded end of the sleeve or needle.`

lt is tobe noted, however, thatthepoints 13 and 14 extend over t-he outer end of-the outer face of said sleeve or needle. j j i. Y Secured to the rear'or outer end of the sleeve'or needle 10 is a'guard disc'l which limitsthe insertion of needle'orfsleeve with- 'in the teat and also functions as a hand grip for turning janoperating' sleeve as will be later,described,`

" The sleeve or needle 10 adjacent to its outer y end is provided with a'cut out portion or slot 17 the oppositeend walls of which are beveled in opposite ldirections as at 18 and-19, tle beveled wall 19 defining a sharplcutting ege;

For operatingwith the sleeve orneedlel() and slidable' in thersame for reciprocatory movement is thejcutter plunger rod 20.1l` This rod Vis ofa greater length than the sleeve and 'ein Vrod'in its extended posit-ion and the .inner end of the cutter rod lin vrear of the slot or cut 'out portion 17.

In use of my improved; instrument ,-A the-V vpenetrating point 13 lis associated with vthe hollow tubular sleeve or'needle 10l andthis sleeve is inserted in the teat passage and the thumb of theoperator lis used soy as to feel the `membrane or tumonv and after the same Vis located the penetrating Apoint is pushed therethrough. I i'ffpreferred, andin order te prevent further injury to the'c'ow the l sleeve can befremoved from the teat andtliesharp pointed" penetrating point 13 removed land the blunt point 14 substitutedtherefor; The

s lfeevefis again inserted in the t'eat and .the

growth is again located Vbythe thumb and forced or held withinthe cut out portion or slot 17.@ The cutter plunger rod 2O isnow pressed vir'iward against the tensin of' its vspring and the cutter plunger rod willjforee the Yedge of the punctured membrane against the cutting edge 18 of the c'ut outportion or slot thereby' cutting 'away said edge. 1 The plunger rod 'can now be released andthe sleeve isrt'urned a slight distance 'afterwhi'ch vthe membrane is again held in the Ycut out portionfo'rslot 17 and the plunger rod againl fz actuated. This procedure takes placeuntil the'V enti-re edge ofthe membrane 'for tumor .'ar'onndthe puncturedportion is ont away.

carried by the forward end of the sleeve, the sleevek adjacent to said point being provided with aout out portion having the forward edge thereof beveled tov provide a' cutting edge, a guard disc carried by the rear edge of the sleeve, and a reciprocatory plunger rod Y mounted 'in said sleeve havingafiat fr'e'e end for forcing the tissues t' kbe Vcut against the -cutting edge.

3. A veterinary surgical instrument for removing membra'n'eor tumorous growths from theteats of cows comprisingv an elongated ltubularsleeve, a penetrating point carried by the Aforward endf of the\sleeve, the sleeve adjacent tosaid point being provided with a out-l out portion having :the fiw'ard edge thereof beveled to provide acuttingedge; a

guard uit@ exmen bythe Tear l edge fof the sleeve', a v"r'ecipreatery j ln-nger'-y rdniouiited in sleeve,a contractile-acci] springfplac'ed ab'ut th/'plunger rodfand an operati'I rg lian-4 dle onusaidplunger rod, the oppositeends` of and "s'aidA ,guardl sdisc, said- 'pene'trating vpoint and plunger being removable -lfromthe ysleeve' tio facilitate YIthe cleaning -of the sleeve.`

In testimony wherenf 'I an'zi signature. f OEE THOSTENSON.

The sleeve can nowv be removed from the tea't, and the cut surface will heal in avery short lengt-hof time in view of Vthe vclean cut v1;`n' ad 1, by the sharp cutting edge `and 'the cutter plunger rod. The trimming andpuncturing o'f the membrane or tumor or'ins Yan:enlarged opening sulicien't to permitfthe iowof ffnilk therethrough.

changes in details may @inademen-out d invention WhatIclaim as new ist"v f 1.151v veterinary surgicalinstrunient for `l-from the teats ofcows comprising an elon- V4gated tubular sleeve, a removable penetrating point on theforward end Aof the sleeve, theV .sleeve adjacent to the'penetrating ,point being provided with cutaway portion having ,the forward edge thereof beveled toprovide a. cutting edge, and a Vplunger cuttingro'd v recip rocatingly mounted in ysaid hollow sleeve having a lflat free end for forcingthe tissues to be cut against the cutting edge. Y.

2.V Afveterinary surgical yinstrument for gated tubular sleeve', a penetrating 'point leparting from the spirit or thefs'cope of lthis Troc *135. removing.v vmembrane and tumorous growths v removing membrane Yor tumorous growths 1, from the teats of cows comprisingan elon- "reo 

